28723986511027 has 2 divisors, whose sum is σ = 28723986511028. Its totient is φ = 28723986511026.

The previous prime is 28723986510991. The next prime is 28723986511067. The reversal of 28723986511027 is 72011568932782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28723986511027 - 2¹⁹ = 28723985986739 is a prime.

It is a super-2 number, since 2×28723986511027² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28723986511067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14361993255513 + 14361993255514.

It is an arithmetic number, because the mean of its divisors is an integer number (14361993255514).

Almost surely, 2^{28723986511027} is an apocalyptic number.

28723986511027 is a deficient number, since it is larger than the sum of its proper divisors (1).

28723986511027 is an equidigital number, since it uses as much as digits as its factorization.

28723986511027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 28723986511027 in words is "twenty-eight trillion, seven hundred twenty-three billion, nine hundred eighty-six million, five hundred eleven thousand, twenty-seven".